Harness or leather stitching horse.



H. J. BOWMAN. "HARNESS 'OR LEATHER STITGHING HORSE.

APPLIOATION FILED JUNE 15,1908.

Patented July 6, 1909.

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HARNESS OR LEATHER STITCHING HOBSE.

Specification 01 Letters Patent.

Patented July 6, 1909.

Application filed June 15, 1908 Serial No. 438,649.

To all whom it may concern:

Be it known that I, I'IULLBERT J. Bow- MAN, a citizen of the United States, residing at Nodaway, in the county of Adams and State of Iowa, have invented certain new and useful Improvements in Harness or Leather Stitching Horses; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to improvements in harness or leather stitching horses.

It has for its object to more especially provide for the operator producing the stitchreceiving openings in the leather or Work without hampering the action of the hands, or by requiring the use thereof in applying the awl used for producing said stitch-receiving openings in the leather, the move-, ment of the awl being effected by foot power, while the operator or workmans hands are wholly free for passing the thread ends through the latter, as in performing said stitching operation. Also, to carry out these ends practically automatically, and in a simple and effective manner.

With these and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be described and particularly pointed out in the appended claims.

In the accompanying drawings, illustrating the preferred embodiment of my invention, Figure 1 is a front or side elevation thereof; Fig. 2 is a rear or opposite side elevation of the same; Fig. 3 is an end elevati on thereof; Fig. 4 is a sectional View partly in elevation of the machine and Fig. 5 is a vertical sectional view produced through the carrier of the stitch perforation forming awl and the shuttle therefor.

In carrying out my invention I mount in suitable position the operative parts of the device in a suitable supporting frame, 1. 2 refers to the stitching horse composed of the usual clamp members, with the up er end of one of said clamp members provic ed with the usual needle slot receiving member, said latter member having its lower portion provided with oppositely extended guides or lugs, 4, for aiding the guiding of the movement of the movable stitching horse member, and the retention of said needle slot member in position upon the fixed stitching horse member, respectively, the action of which will later on more fully be referred to.

A fixed supplemental frame, 5, has suitably arranged for movement or reciprocation therewith, a carriage or carrier, 6, also of frame-like outline, which carrier has suitably supported therein a chuck member, 7, within which reciprocates or moves in a plane at right-angles to the movement of said carrier, the awl, '8, which is suitably held in said chuck by means of the clamping action of a nut, 10, engaging the threaded rear end portion of the awl at the corresponding end of said chuck, and whereby the awl may be readily inserted and removed from said chuck. Said chuck is carried or supported within a tubular bisected inclosure or cylinder or chuck guide, 11, the upper member, 12, of which is fixed in position by a bracket, 13, fixed to said member and screwed or otherwise fastened to the carrier or carriage, 6. The lower movable member 12, of said inclosure or cylinder has preferably fixed to its underside an angular arm or bracket which is vertically slotted to receive the adjusting screw 15, and which is threaded into the bracket 13, so as to hold the lower movable member into engagement with the awl, whereby the latter will be held in proper position within the cylinder.

A preferably angular bar or shaft, 16, is suitably pivoted at its inner end on the frame 5 to reciprocate thereon. The opposite end of said shaft has a suitable bearing in, a boxing, 17, suitably supported in position from the frame, 5. Said shaft, 16, has suitably applied or fixed thereon a walking beam-like lever, 18, having its respective ends suitably connected to a foot lever or treadle, 19, and to a chain, 20, respectively, the intermediate connection between said lever, 18, being effected by a link or rod connection, 21, having its ends loosely received or connected to said lever, 18, and foot lever, 19. Said chain andthe means for actuating it will be later on referred to.

A driving bar, 22, comprising two members or sections 23 and 24, pivotally connected together, as at 25, has its lower member or section fixed to a shaft, 26, suitably journaled in position. The members or sections of said driving bar are relatively ad- 'ustable by means of their connecting pivot olt and apertures or perforations, 27, produced in said members or sections as in providing for varying the stroke or movement of said driving bar, as will be readily appreciated. The upper end of the lower section or member 23 of said driving bar has a lateral flange, 28, for engagement with the up per section or member 24 thereof, when said members assume an alined position, as in performing the respective movements of the awl shuttle and its carriage or carrier, as will be seen later on. To the lower end of the upper section, or member, 24, is suitably connected the chain, 20, said chain being transversely passed under or into engagement with a frictional roll, 29, for suitably guiding said chain for aiding its co-action with said upper member or section of the driving bar when pressure is applied to the foot levers, one of which has been above described, the other subsequently to be referred to.

The upper member or section, 24, of the driving bar, 22, has a link or crank connection, 30, with the carrier or carriage, 6, for actuating or reciprocating the latter, as foot power or pressure is applied.

A second foot lever or treadle 31 has a link connection 32 with the shaft 26, to which latter is connected, as above stated, the lower member or section of the driving bar, 22, and said foot lever, therefore, when actuated, delivers movement from said shaft to said driving bar.

A crank arm, 32, effects connection between the shaft, 16, and a supplemental arm or link, 33, pivotally connected to an offset or outstanding portion of the awl carrying chuck, and whereby, as said shaft, 16, is actuated, said chuck, with the needle, is suitably reciprocated as in performing the perforating operation by the awl.

A bar, 34, preferably angular in general cross sectional outline, has one end supported in an arm or bracket, 35, slidable upon a cross bar, 36, of the frame, 2, said bar, 34, being adapted to be manually rotated or turned as in presenting any one of its sides upward, said sides being provided with a series of notches, 37, of different gradations for the engagement therewith of the effective end of a dog, 38, suitably pivoted in position upon an arm, 39, projecting from the frame 2 and held in effective position by a spring 39 suitably connected at its ends to said dog and a fixed point, respectively. The purpose of this arrangement is to provide, as will more fully presently appear, for Varying the perforating action of the awl. Said bar, 34, is supported intermediately of its ends upon a racket or arm, 40, secured to a supporting bar 40, its opposite cylindrical end, which is carried by a bracket, 35, being held under pressure preferably by a flat spring, 41, bearing thereon and having one end resting against an inclined surface 41, of said bracket, said spring being held in place by a clip, or stirrup, 42, and a screw passing through said spring and stirrup and screwing into said inclined portion of said bracket, whereby, it is apparent, said spring may be so adjusted with relation to said inclined portion or surface as to compensate loss of tension in said spring, and thus provide for holding the bar, 36, in effective position at all times. The bracket, 35, has a right-angular, lateral arm equipped with a spring pressed pendent dog, 43, having its upper beveled edge in frictional contact with the under side of a cross bar of the frame for the retention, primarily, of said bracket in position, and for providing for the adjustment of said bracket or stop, 35, at any desired position along the supporting cross bar for engagement with and regulating the movement of the carriage or carrier, 6, as in controlling the perforating by the awl of the work or leather held in the stitching horse, as is ap parent. For instance, when it is desired to limit the rearward movement of the carriage 6, the bracket 35 is moved forwardly on the bar 36 and secured in place thereon.

The stitching horse has its movable or hinged member connected by flexible or strap connection, 44, to a cranked rock shaft, 45, suitably journaled in the supporting frame. Said shaft is provided with a lever, 46, for the retention of said rock shaft, together with the hinged member of the stitching horse, and its means of connection therewith, in effective position by means of a rack or notched bar, 47, suitably secured in position to the supporting frame.

In the operation of the device and with the operator seated on the supporting frame 48, suitable pressure is applied to the foot levers 19 and 31 to o erate the arts as will be now clearly described. We Will assume that the awl carriage is retracted to inoperative position and with the awl limiting device in its rearmost position. To move the carriage forward to its engagement with the bracket 35 the operator presses upon both levers 19 and 3]., the pressure upon the lever 19 being somewhat ess than the pressure on the lever 31 and for the purpose of retaining the awl in retracted position until the carriage gets to what may be termed the puncture position at which time the lever 19 is entirely released and considerable pressure brought to bear upon the lever 31. As the upper end of the driving bar 24 has reached its limit of movement by reason of the former engaging the; bracket 35 and as the section 23 is keyed to the shaft 26 both fulcrum at the point 25 and cause the lower end of the lever 24 to be disposed at an angle or cross relation to the portion 23. As this end is connected to the chain 20 the rocker lever 18 is turned so as to turn the shaft 16 on the lever 32 and thus force the awl holder and awl forward the latter passing through the material which is held in the harness horse. When it is desired to return the carriage to its rearward position the lever 19 is depressed which pulls downwardly on the link 27 thus reversing the action of the shaft 16 and retracting the awl. This action also pulls upwardly u on the chain 20 and brings the sections of t 1e bar 24 in alinement, the lug 28 on the section 23 engaging the side edge of the section 24 and limiting the same. After this the direct pressure on the lever 19 pulls upon the lower end of the section 24 and y raising on the lever 31 and depressing on the lever 19 the carriage may be returned to its rearward osition. As the carriage travels backwarc ly it engages the cam-shaped forward end of the pawl 38 and raises its engaging end from the rack bar 34. WVhen this is released this bar moves forward sufliciently under the influence of the detent 43 so that the pawl will not drop into the same notch and when the carriage is forced forward on its next movement it will force the rack bar forward until the pawl engages in the shoulder of the next notch or rack tooth. This will cause the awl to stop at a different point and it will be plainly seen that through continued operation the machine will make a series of se arated alined holes through which the stitc ring may pass.

From the foregoing description, taken in connection with the accompanying drawing, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of constructlon may be resorted to without departing from the principle or sacrificing any of the advantages of the invention as defined in the appended claims.

Having thus particularly described my invention, what I claim as new and desire to secure by Letters-Patent, is:

1. A device of the character described, embracing a reciprocating carriage, means for actuating said carriage, a chuck having transverse movement in said carriage, means for actuating said chuck adapted for co-action with the aforesaid actuating means, and com prising foot power actuated levers, and means of connection between said foot power levers and pivotally connected together driving bar members for the latter actuating means.

2. A device of the character described embracing a reciprocating carriage, a chuck arranged 1n said carnage, a rock shaft equipped with a cranked arm having link connection with said chuck, a lever fixed to said rock shaft, foot power levers, a crank shaft having connection with one of said foot power levers, a driving bar composedof pivoted-together members connected to said latter shaft, and having crank arm connection with said carriage, and means of connection between one of said driving bar members and the lever carried by the first referred to shaft.

3. A device of the character described embracing a reciprocating carriage, a chuck having movement at right angles to the movement of said carriage and equipped with a perforating implement, a two-part driving bar with its parts pivoted together, one of said parts having cranked arm connection with said carriage, a crank shaft having the other of said arms connected thereto, means for actuating said crank shaft, a rock shaft carrying said chuck, means for actuating said rock shaft, and means connected to said rock shaft actuating means for operating one of the members of said driving bar.

4. A machine of the character described, embracing a reciprocating carriage, a chuck equipped with a perforating implement and carried by said carriage, said chuck having movement at right-angles to the plane of movement of said carriage, a rock shaft having crank arm and link connection with said chuck, foot power actuated levers, a twopart driving bar having one part or member connected to said reciprocating carriage, a lever secured to said rock shaft, connecting means between said lever and one member of said driving bar, means for guiding said connecting means, a crank shaft having connection with one of said foot power levers, and with one member of said driving bar and connecting means between the other of said foot power levers, and a lever fixed on said rock shaft.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HULLBERT J. BOWMAN. Witnesses:

L. E. WEAVER, Jomv BERGMANN. 

